Answer:
C. European powers established boundaries with little regard for traditional tribal or ethnic divisions.
Step-by-step explanation:
The European powers had little to no consideration when it came to establishing boundaries, they established the boundaries that fitted them the most, and there were territories that were historically belonging to a certain tribe or ethnia and suddenly they weren´t theirs anymore or they were being invaded, this created a hostile enviroment with several tribes that escalated into several wars and battles with them.